首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Hardly anyone pays much attention to the air. It is【B1】______ , and we never feel it unless a strong wind【B2】______ along, blowi
Hardly anyone pays much attention to the air. It is【B1】______ , and we never feel it unless a strong wind【B2】______ along, blowi
admin
2010-03-26
52
问题
Hardly anyone pays much attention to the air. It is【B1】______ , and we never feel it unless a strong wind【B2】______ along, blowing things around. But even though we are rarely【B3】______ of it, the air is always around us. It is an amazing and very powerful substance, with【B4】______ that few people know anything about.
We live in a world that is always in【B5】______ . Even still air and ice and solid rock are【B6】______ with movement. This movement is the dancing of the tiny molecules that make up all matter. The molecules, in mm are made up of still tinier atoms, which are the smallest units of【B7】______ .
In air, which is a mixture of gases, this dance takes the form of a flee-for-all, in which【B8】______ molecules move at a speed of nearly 250 miles an hour and bump into other molecules five thousand million times a second.【B9】______ . Usually we don’t feel this pressure because it is equaled by pressure from inside our bodies.
In fact,【B10】______ . At this very minute, your body is supporting 14 tons of air pressure.
【B11】______ . We can rarely see this water, but it is there just the same, like a huge ocean over our heads.
【B11】
选项
答案
Another interesting thing about air is that it contains at all times large quantities of water vapor
解析
转载请注明原文地址:https://kaotiyun.com/show/bxk7777K
0
大学英语四级
相关试题推荐
A、F8.B、F7.C、Enter.D、P.BWhatshouldthemanpresstoreturntothedocument?
Itisgenerallyacceptedthattheexperiencesofthechildinhisfirstyearslargelydeterminehischaracterandlaterpersonal
Almostallcompaniesinvolvedinnewproductionanddevelopmentmust______.Alltheessentialservicesonwhichwedependare
TheUnitedStatescallsforsomecountriestoresearchthebionicssince1960.TheU.S.RubberCompanyismakingtestsofusing
WhenIrefusedtomovemycar,he______________________(勃然大怒)andthreatenedtocallthepolice.
A、Workingstudentsingeneralsufferadropingrades.B、Workingstudentsarebetterabletocopewithdifficultiesinlife.C、W
A、Peopleinsomedevelopingcountrieshaverealizedthattheworld’sresourcesarelimited.B、Peopleindevelopedcountriesdon
A、Removeit.B、Replaceit.C、Pressabutton.D、Notmentioned.A根据对话中“itstartswhenyouremoveit!”可以判断此题答案为A
Thesoldier____________(被指控逃跑)whentheenemyattacked.
NapoleonBonapartewaskeentolearnEnglishwhileinexile,documentsshowinBritainforthefirsttimereveal.
随机试题
意志的()是能够灵活地控制自己的情绪,以约束自己产生与完成任务相反行动的良好意志品质。
联邦快递的客户服务体系在产品高度同质化的今天,服务已经成为决定竞争成败的关键因素,服务质量的优劣直接关系着企业的生存和发展。现在,几乎所有的企业都把提升客户服务水平作为企业持续发展的头等大事,如何创建卓越的客户服务体系是每一个企业都必须认真思考的
正常情况下,牙齿的数目不可能是
患中年人,童年生活受挫折,个性克制,情绪压抑,经常焦虑、抑郁,又不善于宣泄,过分谨慎,强求合作调和。他的行为模式最容易患的躯体疾病是
【背景资料】某工业建筑施工项目,在测量管理工作中,发生了以下事件:一、施工方依据测绘部门提供的放线成果、红线桩及场地控制网,测定了建筑物位置主控轴线、建筑物±0.000绝对高程等;二、施工单位在完成施工测量方案、红线桩校核成果、水准点引测成果及施工过程中
添加型阻燃剂可分为有机阻燃剂和无机阻燃剂,它们和树脂进行机械混合后赋予树脂一定的阻燃性能,主要用于()等树脂中。
沈阳故宫主要融合了()三个民族的建筑文化成果。
EVA使管理者明白增加价值的途径不包括()。
文言虚词主要包括副词、介词、连词、助词、叹词和部分代词,以及一些兼词。()
Theexpertsfinallydecipheredmilitaryanddiplomaticsignalsatlast.
最新回复
(
0
)